A107922 Numbers k such that the sum of the terms of the continued fraction for the harmonic mean of k and the k-th prime is prime.

3, 13, 17, 18, 19, 21, 20, 19, 21, 23, 26, 27, 26, 27, 30, 42, 48, 137, 51, 52, 53, 54, 63, 73, 88, 90, 101, 110, 123, 113, 140, 115, 118, 121, 110, 123, 128, 133, 149, 48, 137, 113, 140, 133, 149

Offset

1,1

Links

Table of n, a(n) for n=1..45.

Eric Weisstein's World of Mathematics, Continued Fraction.

Eric Weisstein's World of Mathematics, Harmonic Mean.

Crossrefs

Cf. A107919 (sum of terms of continued fraction for the harmonic mean of n and n-th prime), A107923 (primes occurring in A107919).

Sequence in context: A042589 A218364 A370726 * A119889 A038956 A309291

Adjacent sequences: A107919 A107920 A107921 * A107923 A107924 A107925

Keyword

nonn,more

Author

Zak Seidov, May 28 2005

Status

approved